Error 0x8004009D

Value: -2147221347 | 0x8004009D | 2147745949

What does it mean ?

IO_WARNING_DISK_SURPRISE_REMOVED  
Disk %2 has been surprise removed.
Value: 157 | 0x009D | 0b0000000010011101

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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